# How to solve equation with arctan in Wolfram|Alpha?

Posted 6 months ago
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 I'm using the following calculation to find the degree of camber using some measurements:arctan((AD-BC)/AB)Using this calculation I get: arctan((32.9-25.4)/381) = 1.128 degreesMy variable is in this exercise is 32.9 so we'll call that X - and I want my degrees to equal 2.4. What should X be to equal approximately 2.4 degrees?E.g. arctan((x-25.4)/381) = 2.4I can't for the life of me figure out how to get Wolfram|Alpha to solve an approximation for this!! Any help would be appreciated. Note: I don't require it to be EXACTLY 2.4, just close!
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Posted 6 months ago
 You probably asking for a solution like this: NSolve[ArcTan[(x - 25.4), 381] == 2.4, x] This takes the quadrant into account - refer to the documentation on ArcTan.
Posted 6 months ago
 What do you think about this? angle = ArcTan[a (x - b)] equation = y == Tan[angle] Solve[equation, x] Tan[ArcTan[(x - 25.4)/381]] == Tan[2.4]